C# Signature:
[DllImport(@"setupapi.dll", CharSet=CharSet.Auto, SetLastError = true)]
public static extern Boolean SetupDiEnumDeviceInterfaces(
IntPtr hDevInfo,
ref SP_DEVINFO_DATA devInfo,
ref Guid interfaceClassGuid,
UInt32 memberIndex,
ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData
);
VB Signature:
Declare Function SetupDiEnumDeviceInterfaces Lib "setupapi.dll" (TODO) As TODO
User-Defined Types:
None.
Alternative Managed API:
Do you know one? Please contribute it!
Notes:
None.
Tips & Tricks:
[StructLayout(LayoutKind.Sequential)]
public struct SP_DEVINFO_DATA
{
public uint cbSize;
public Guid ClassGuid;
public uint DevInst;
public IntPtr Reserved;
}
//You need to create a structure for the deviceInterfaceData like this....
public struct SP_DEVICE_INTERFACE_DATA
{
public int cbSize;
public Guid InterfaceClassGuid;
public int Flags;
public IntPtr RESERVED;
}
//Then initialize the cbSize value like this in your calling method
SP_DEVICE_INTERFACE_DATA devData = new SP_DEVICE_INTERFACE_DATA();
devData.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(devData);
// failure to do so will always return false (which is the value you'll also get if the device is not connected)
// Here's what the call looks like...
bool result = Win32Calls.SetupDiEnumDeviceInterfaces(ipDeviceHndl, iLU, ref DeviceGUID, 0, ref devData);
// The DeviceGUID parameter will be device dependant. Look in the Manufacturer's sdk or api for the correct guid for your device
Sample Code:
class Win32Calls
{
[DllImport(@"setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr SetupDiGetClassDevs(ref Guid classGuid, IntPtr enumerator, IntPtr hwndParent, UInt32 flags);
[DllImport(@"setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern Boolean SetupDiEnumDeviceInterfaces(IntPtr hDevInfo, IntPtr devInfo, ref Guid interfaceClassGuid, UInt32 memberIndex, ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData);
}
